Look at the top-grossing films. It is still common to see a 55-year-old male lead (think Brad Pitt, Leonardo DiCaprio, George Clooney) romantically paired with a 25-year-old co-star. The "older woman-younger man" trope, while gaining ground (see The Idea of You with Anne Hathaway), is still treated as a quirky rom-com exception rather than a norm.
To see the shift in high definition, one need only look at the Oscar races of the last three years. 125 Pics of Mature Amateur MILFS